New World species of the genus Incisitermes Krishna, 1961 range from California to Peru. The soldier of this genus is notable for the incised anterior margin of the pronotum and the elongated third antennal article. I report the broad occurrence of Incisitermes platycephalus (Light, 1933) from extreme southern Mexico to the Pacific coast of Nicaragua. Incisitermes nigritus (Snyder, 1946) from Guatemala is a junior synonym of I. platycephalus. Among Incisitermes, I. platycephalus is characterized by its small size, dark imago, and dorsoventrally compressed soldier head capsule.